COS Requirements

COS is not available if a Sun Enterprise xx00 server lacks enabling firmware. In this case, the system displays the following messages during the boot sequence:

WARNING: Firmware does not support CPU power off
WARNING: Automatic CPU shutdown on over-temperature disabled
WARNING: Firmware does not support CPU restart from power off
WARNING: The ability to restart individual CPUs is  disabled

When equipped with the proper firmware, the system displays the following during the boot sequence. Later firmware will show a similar output..

Board 0:   OBP   3.2.8 1997/02/27 14:00   POST 3.5.1 1997/03/05 09:34 

1. To check the firmware revision level, use the prtdiag -v command.

   The correct firmware version for COS support is 3.2.8 or later.